Circles
What is the radius of a circle that has a diameter of 6?
3
What needs to be true about the line when you have the graph of a proportional relationship?
Straight line touching the origin
What is 20% as a decimal?
0.20
Simplify
5x + 8y - 2x
3x + 8y
Solve for n
5n + 5 = 45
n = 8
Find the circumference of the circle if the diameter is 2.
6.28
A water hose had filled up 1⁄3 of a pool after 1⁄2 of an hour. At this rate, how many hours would it take to fill the pool?
1 1/2 hours
A restaurant bill was $28 after tax. If you wanted to leave a 17 percent tip, how much should you leave total?
$32.76
Simplify
5(7y+2)
35y + 10
Solve for x
4(x-1) = 24
x = 7
Find the area of a circle that has a radius of 6.
113.04
A construction contractor used the equation Y=KX to determine it would cost him $5.91 to buy 3 boxes of nails. How much is each box?
$1.97
A video game was $31. This weekend the game will be marked 20 percent off. How much is the game this weekend?
$24.80
Simplify
3a + 2b − 4a + 9b
-1a + 11b
Solve for x
−9x + 1 < −80
x > 9
Find the circumference of a circle with a radius of 2.
12.56
At a carnival it costs $91.59 for 71 tickets. Write an equation that can be used to express the relationship between the total cost (t) and the number of tickets(n) you buy.
t=1.29n
Ann works in a supermarket for $10.00 an hour. If her pay is increased to $12.00, then what is her percent increase in pay?
20%
Simplify
3a + 7 + 2(3 + a)
5a + 13
Solve for m
−15 = −4m + 5
m = -5
Find the diameter of the circle of the circumference is 15.7
An ice cream truck driver determined he had made $3.96 after selling 2 ice cream bars (using the equation y=kx). How much would he have earned if he sold 5 bars?
$9.90
The price of a toy car is decreased from $20 to $15 after a discount. Find the percentage change in the amount.
25%
Simplify
3 − 8(7 − 5n)
-53 + 40n
Solve for x
−9x − 13 > −103